Sunday, December 21, 2014
YOLO COUNTY NEWS
99 CENTS

Consider a circulating hot water pump

By
From page D2 | April 11, 2014 |

By Bill Cavins

Are you wasting good, treated water while you wait for your shower to get hot? Do you have to run water in the kitchen to get hot water to the dishwasher? Are you committed to water conservation? Did you know that every home wastes thousands of gallons of water a year waiting for it to get hot?

Demand hot water circulation systems are not new. They have been around for a long time, but with our current water shortage, they could be a great contributor to water conservation.

The concept is this: At the push of a button, water is pumped from the hot water line back into the cold water line at the water fixture furthest from the water heater, usually a bathroom. A temperature-sensor detects an increase in the water temperature as hot water arrives and shuts the pump off. Meaning, while you are getting ready for your shower, no water is wasted. The pump runs for less than a minute, and hot water is immediately available wherever the pump is installed, usually at the bathroom sink.

Whether or not hot water is then available at other locations in your house depends on the plumbing layout. Ideally if there is only one main hot water line with small branches to the kitchen, bathrooms and laundry, installing the pump at the end of the line should provide hot water within seconds anywhere in the house. (Remote buttons can be placed at other locations.) If the farthest point is at the end of one branch — for example, the master bath, with the kitchen at the end of another branch — this will affect the time it takes for hot water to reach the kitchen. A second pump would be required.

For tankless water heaters, the pump must have a high enough flow rate to activate the water heater, 10 gallons/minute is recommended. For pipe runs of more than 100 feet, a bigger pump is required, such as 20 gallons/minute.

These demand systems are simple to install —  hardware kits are available. However, they do require an electrical outlet. In the case of a bathroom sink, on outlet can usually be added by extending wiring from an existing outlet by the sink. This is the only part of the installation that requires trade skills, as well as a permit.

The “button” is actually a doorbell button and is low voltage. An optional remote receiver hooks right up to the unit so it can be turned on from anywhere in the house with a remote transmitter button.

There are a variety of choices in demand hot water systems, including companies such as ACT, Watts and Grundfos. Costs are in the $200 to $300 range.

— Bill Cavins is from Ganesh Works in Davis.

Comments

comments

Special to The Enterprise

  • Recent Posts

  • Enter your email address to subscribe to this newspaper and receive notifications of new articles by email.

  • .

    News

     
    What’s new at UCD? Construction projects abound

    By Tanya Perez | From Page: A1 | Gallery

    No-nonsense Musser voted Citizen of the Year

    By Dave Ryan | From Page: A1 | Gallery

     
    Sharing a meal, and so much more

    By Anne Ternus-Bellamy | From Page: A1 | Gallery

    Brinley Plaque honors environmental stalwart

    By Dave Ryan | From Page: A1 | Gallery

     
    North Korea proposes joint probe over Sony hacking

    By The Associated Press | From Page: A2

    AP sources: Cops’ killer angry over Garner death

    By The Associated Press | From Page: A2

     
    Raul Castro: Don’t expect detente to change Cuban system

    By The Associated Press | From Page: A2

    Police seek help in finding runaway twin girls

    By Enterprise staff | From Page: A2

     
    Downtown crash results in DUI arrest

    By Lauren Keene | From Page: A2

    March trial date set in Davis molest case

    By Lauren Keene | From Page: A2

     
    Donors, volunteers honored on Philanthropy Day

    By Special to The Enterprise | From Page: A3 | Gallery

     
    Enterprise plans Christmas, New Year’s holiday hours

    By Enterprise staff | From Page: A3

     
    Luminaria display planned in West Davis

    By Enterprise staff | From Page: A3

     
    Soup’s On will benefit NAMI-Yolo

    By Enterprise staff | From Page: A3

    Pedal around Davis on weekly bike ride

    By Enterprise staff | From Page: A3

     
    Supplies collected for victims of abuse

    By Enterprise staff | From Page: A3

     
    Surprise honor is really nice, dude

    By Enterprise staff | From Page: A5 | Gallery

     
    Konditorei presents free holiday concert

    By Enterprise staff | From Page: A5

    .

    Forum

    Google me this: Should I hit that button?

    By Marion Franck | From Page: B4

     
    E-cigs surpass regular cigarettes among teens

    By The Associated Press | From Page: B4

     
    It’s not a pretty picture

    By Creators Syndicate | From Page: B4

    Too late to pick a fight

    By Creators Syndicate | From Page: B5

     
    All police need to humanize

    By Letters to the Editor | From Page: A10

    Are we only a fair-weather bike city?

    By Letters to the Editor | From Page: A10

     
    Join us in making our world more just

    By Special to The Enterprise | From Page: A10

     
    Tom Meyer cartoon

    By Debbie Davis | From Page: A10

    The electronic equivalent of war

    By Special to The Enterprise | From Page: A11

     
    The Green House effect: Homes where the elderly thrive

    By New York Times News Service | From Page: A11

    .

    Sports

     
    Stenz shines as DHS girls take a tournament title

    By Enterprise staff | From Page: B1 | Gallery

    Aggie Manzanares not quite finished carrying the rock

    By Bruce Gallaudet | From Page: B1 | Gallery

     
    UCD women look to improve, despite game at No. 7 Stanford

    By Bruce Gallaudet | From Page: B1 | Gallery

    Second-half run spurs Aggie men to 8-1

    By Enterprise staff | From Page: B1

     
    49ers fall to San Diego in overtime

    By The Associated Press | From Page: B10

    .

    Features

    .

    Arts

    .

    Business

    Marrone Bio expands its product reach in Latin America

    By Enterprise staff | From Page: A4

     
    Sierra Northern Railway names CEO

    By Special to The Enterprise | From Page: A4

    Sink your teeth into Vampire Penguin

    By Wendy Weitzel | From Page: A4 | Gallery

     
    .

    Obituaries

    .

    Comics

    Comics: Sunday, December 21, 2014

    By Creator | From Page: B8